$ git clone -n https://src.fedoraproject.org/rpms/chrony.git /var/lib/mock/f45-build-3991-329/root/chroot_tmpdir/scmroot/chrony
Cloning into '/var/lib/mock/f45-build-3991-329/root/chroot_tmpdir/scmroot/chrony'...
$ git fetch origin 80c06117ad428ef728136913fb169fb270c5e586:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/chrony
 * [new ref]         80c06117ad428ef728136913fb169fb270c5e586 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 80c0611 4.9-1